*{
	margin:0;
	padding:0;
	box-sizing: border-box;
}
.lockScreen{
	position:relative;
	width:100%;
	background:#ccc;
	opacity:0.6;
	overflow:hidden;
}
.content{
	position:absolute;
	border:1px solid red;
	width:400px;
	height:200px;
	text-align:center;
	top:50%;
	left:50%;
	margin-left:-200px;
	margin-top:-100px;
	}
form{
	height:140px;
}
h3,h4{
	-webkit-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	-khtml-user-select: none;   /*早期浏览器*/
     user-select: none;   
	width:100%;
	background:blue;
	height:30px;
}
h3{
	cursor:move;
}
